Method assertQuery

basex-tests/src/main/java/org/basex/tests/w3c/QT3TS.java:679–689

Tests assertion. @param result query result @param expected expected result @return optional expected test suite result

(final QT3Result result, final XdmValue expected)

   * @return optional expected test suite result
   */
  private String assertQuery(final QT3Result result, final XdmValue expected) {
    final String exp = expected.getString();
    try {
      final String query = "declare variable $result external; " + exp;
      return environment(new XQuery(query, ctx), result.env).context(result.value).variable(
          "$result", result.value).value().getBoolean() ? null : exp;
    } catch(final XQueryException ex) {
      // should not occur
      return ex.getException().getMessage();
    }
  }

  /**
   * Tests count.